Molding-machine.



No. 743,362. PATENTED NOV. 3, 1903. B. 0. WHITE. MOLDING MACHINE.

APPLICATION FILED FEB. 24, 1902.

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' No. 743,362. PATENTED NOV. 3, 1903.

- B. 0. WHITE.

MOLDING MACHINE.

- APPLICATION FILED FEB. 24. 1902. N0 MODEL. 6 SHEETS-SHEET 2.

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No] 743,362. PATBNTED News, 1903.

B. 0. WHITE. MOLDING MACHINE,

APPLICATION FILED FEB. 24, 190 2.

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1 29160! W Z0, %M%/. Brute azwrk "late lam/6Q M m: unnms PETERS c0.FHOTO-LITHO, Musumorom n c No. 743,362. PATENTED NOT-3, 1903.

B. 0. WHITE. MOLDING MACHINE.

7 APPLICATION FILED FEB. 24. 1902.

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No. 743,362. PATEN'TED NOV. s, 1903. B. 0. WHITE.

MOLDING MACHINE.

APPLICATION FILED FEB. 24. 1902.'

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UNrTED STATES A Patented November 3, 1903".

PATENT Enron.

MOLDING-MACHINE.

SPEGIFIGATION'forming part of Letters Patent No. 743,362, dated November3, 1903.

Application filed February 24, 1902. Serial No. 95.254. (No model.)

To all whom it may concern:

Be it known that I, BRUCE CLARK WHITE, of Pittsburg, in the county ofAllegheny and State of Pennsylvania, have invented certain new anduseful Improvements in Molding- Machines; and I'do hereby declare thatthe following is a full, clear, and exact description thereof, referencebeing had to the accompanying drawings, and to the letters of referencemarked thereon, which form a part of this specification.

This invention relates to improvements in molding-machines forgivingsolid form to pulverulent or semiplastic materials and which is adaptedfor use in making briquets or solid blocks of granular or pulverulentfuel prep,- aratory to burning, or from finely divided or pulverizedores or minerals preparatory to smelting, or for other similar uses.

A machine embracing the principal features of construction hereinillustrated is shown in a prior application for United States LettersPatent, filed June 29, 1901, Serial No. 66,463; and the presentinvention embraces improvements in the machine set forth in saidapplication. 7

The invention consists in the matters hereinafter described, and pointedout in the appended claims.

In the accompanying drawings, Figure 1 is a View in front elevation of amachine em-* bodying my invention. Fig. 2 is a side view thereof. Fig. 3is a vertical section of the machine, taken upon line 3 3 of Fig. 1.Fig. 4 is a transverse vertical section takenupon line 4 4 of Fig. 3.Fig. 5 is a detail plan section taken upon the indirect line of Fig. 3.Fig. 6 is a sectional plan view taken upon line 6 6 of Fig. 3. Fig. 7 isa detail plan section taken upon line 77 of Fig. 3. Fig. Sis a detailplan section taken upon line 8 8 of Fig. 3. Fig. 9 is a detail plansection taken upon line 9 9 of Fig. 3. Fig. 10 is a detail cross-sectionof the parts shown in Figs. 8 and 9, taken upon line 10 10 of Fig. 9.Figs. 11 and 12 are edge and face views, respectively, of a spacingplate or shim shown in Figs. 13 and 14 are like views of another spacingplate or shim. Fig. 15 is a detail plan section taken upon line 15 15 ofFig. 4. Fig. 16 isa detail sect-ion taken upon line 16 16 of Fig. 15.Fig. 17 is a sectional viewtaken upon line 17 17 of Fig. 18, showing anadjustable connection of the cam-engaging roller with the arm throughwhich the moldplate is actuated. Fig. 18 is a face view of the arm shownin Fig. 17 with the plate omitted, which is shown in said Fig. 17 asapplied to the roller-pivot at the side of the arm remote from theroller.

As shown in the said drawings, A A designate two parallelvertically-arranged frame standards or uprights, which are joined witheach other at their lower ends by means of a transverse recessed part orbox A, which in the instance shown is cast integral with theframe-standards A A.

B is a horizontally-arranged shaft which extends through and hasbearings in the upper ends of the frame-standards A A, said shaft beingprovided between the standards with an eccentric B.

0 designates a gear-wheel on the shaft B, and D a gear-pinion whichmeshes with the gear-wheelC and is mounted on a countershaft D, throughwhichdrivingpoweris transmitted to the machine. Said counter-shaft isshown as provided with a driving-pulley D E designates a mold-platelocated below the level of the shaft B and which moves in an obliquepath or in a direction toward and away from the shaft B and which slidesat itsends upon oblique guidesurfaces a on the forward edges of theframe-uprights A. Said mold-plate is provided with a plurality ofmold-recesses e and with a wall or flange E, which rises from the rearor lower edge thereof and forms with the mold-plate a mold box orreceptacle for the material to be inserted in the molds.

F F F designate reciprocating plungers, which are attached at theirupper ends to a cross-head F, located between the shaftB and themold-plate E and the lower ends of .which are adapted to enter and passthrough the mold-recesses e,'said plungers being arranged obliquely orin an inclinedpjosition and having endwise movement in an oblique path.The cross-head F is mounted to slide on inclined guide-surfaces on theframe-standards A. Said cross head is actuated through the medium of apitman G, which is engaged with the eccentric B of the shaftB and isconnectcd with the cross-head by a pivot-pin G.

I I indicate endwise-movable pistons located 'below and in alineinentwith the plungers F F and which enter and are adapted to close the lowerends of the mold-recesses, said pistons having separate sliding andyielding connection with the frame of the machine, as will hereinaftermore fully appear. The entrance of said plungers into and their exitfrom the ends of the mold-recesses is effected through their ownreciprocating movement and the reciprocatory movement of the moldplateE.

The devices for affording a yielding support for the pistons I Iconsists of a bearingplate A having bearing-apertures for the saidpistons, springs K K, located in the hollow casting or box A at the baseof the machine, and yoke-plates L L, located between said springs andthe lower end of said several pistons and which serve to transmitpressure from the'springs to the pistons.

From the general arrangement of the parts above described it will beobserved that the machine illustrated in the accompanying drawingsdiffers from that shown in the said prior application hereinbeforereferred to from the fact that the main frame is upright instead ofnearly horizontal, the plungers F F and pistons I I are arranged in aninclined position instead of horizontally, and that the moldplate Einstead of being vertical, or nearly so,is so nearly horizontal thatmaterial deposited thereon tends to enter the moldrecesses by the actionof gravity. The machine illustrated in the accompanying drawings alsodiffers from that shown in said prior patent from the fact that in saidprior patent the reciprocating mold-plate formed one side of a mold-boxin which the material was deposited from above, whilein the constructionshown theinclined upper surface of the moldplate serves, in connectionwith the inclined flange or plate E, which rises from its lower edge, toform a V-shaped or angular trough or receptacle into which the materialis delivered and near the lower angle of which the molds are located, sothat the material to be fed to the molds tends to pass or fall bygravity along the inclined surfaces of the mold-plate and its flange Eand to thereby reach a position to enter the mold-recesses.

Now referring to the details of construction in the machine illustratedthe cross-head F, as shown clearly in Fig. 5, bears at its ends againstthe inner faces of the frame-standards A A and is adapted to engageinwardlyextending oblique guide-flanges a, formed on the said innerfaces of said standards. guide-ribs areshown aslocated near the rear orinnermargin of the cross-head and as adapted to engage a bearing recessor groove formed partially in the rear edges of the cross-head andpartially by means of cap plates F bolted to the said rear edges of thecrosshead, as clearly shown in Figs. 3 and 5. The pitman G is shown asmade nearly as wide as the cross-head itself, and its end which en- Saidgages the cross-head is provided with two laterally-separated annularparts 9 g, Figs. 4 and 5, which engage said pivot-pin near the ends ofthe same and adjacent to the integral'end flanges f of thecross-head,which rise above the pivot-rod and are provided withbearing-apertures for the ends of said rod. In its portion between theannular parts g g the pivot-pin rests in contact with a concavebearing-surface f on the cross-head and with a similar concavebearing-surface g on the pitman, so that the thrust of the pitman istransmitted to the cross-head directly through said pin, which latter bythe construction described is interposed throughout nearly its entirelength between the opposing bearingsurfaces on the pitman andcross-head. Said pitman has at its upper end a semicircularbearing-recess to receive the lower half of said eccentric and isprovided with a cap G which is secured to the pitman by bolts and formsthe top of a split bearing-box, of which the body of the pitmanconstitutes the lower part. Provision is herein shown for lubricatingthe bearing between the pitman and the eccentric, consisting of oilchannels or recesses g formed in the body of the pitman and in the cap Gand lubricating-chains g', which extend around the eccentric and hangloosely into the lower parts of the channels g which are made ofconsiderable depth in their parts below the eccentric to receive andhold the necessary quantity of lubricant.

The mold-plate E and its flange E are made, as shown, of an integralcasting, which extends across the front of the machine and has bearingagainst the oblique guide-surfaces a on the frame-standards, thebearing-surfaces which rest against said guide-surfaces being formed onthe rear face of the flange E, as clearly seen in Fig. 6. To holdthesaid casting in position against the guide-surfaces a, theframe-standards are provided with inwardly-extending oblique guide-ribsa,which are engaged by means of holding-plates E bolted to the rear faceof the flange E, as seen in Figs. 3 and 6, and which extend around theinner and rear faces of said guide-ribs. At the ends of the mold-platesE and flange E said parts are provided with end flanges E which form theend walls of the'trough or receptacle, the bottom and rear walls ofwhich are formed by the mold-plate E and its flange E. The mold-recessesee are arranged in alinement with the plungers F, which are adapted toenter the same in the act of compressing the material within saidmold-recesses. The flange E is preferablyarranged parallel with the saidplungers F, and the lower edge of the said flange is located closelyadjacent to the mold-recesses e e, so that material deposited in theangular receptacle formed by the mold-plateE and said flange E tends tofall by gravity into the angle formed between said plate and flange andwill thereby be brought into position to enter the mold recesses whenthe plungers are withdrawn upwardly from or out of the same, it beingunderstood that portions or charges of such material are carried by theplungers into the mold-recesses in the advance movement of the saidplungers and that said plungers are drawn upwardly to a considerabledistance above the top surface of the moldplate, so that the materialmay fall beneath the ends of the plungers and will be forced by thelatter into the mold-recesses as the plunger-s advance toward and intothe latter. To increase the capacity of the receptacle formed by themold-plate and the plate E,

a plate or casting E having end walls 6 is attached to the outer edge ofthe mold-plate E and to the end flanges E said wall E extendingoutwardly and being curved upwardly, so that it forms, in effect, aflange on the upper edge of the mold-plate E.

In the case of a machine having onlya few mold-recesses and plungersmaterial delivered into the receptacle formed by the mold plate, theflange E, and the front plate E will fall by gravity into the molds; butwhen a considerable number of mold-recesses and plungers is employed Iprovide a conveyer or device for moving or carrying the material whichis delivered to one end of the said receptacle in a direction endwise ofthe said receptacle to the several mold-recesses. A feed-spout R isshown in the drawing Fig. 2 as a means of delivering material to thesaid receptacle. The conveyor illustrated consists of a horizontalspirally-bladed conveyer-shaft M, which is mounted at its ends.

in bearing-apertures formed in the end walls 6 and which is preferablyprovided with a continuous spiral conveyerblade m. Devices are providedfor driving said shaft M from the counter-shaft of the machine, whichare so constructed that the actuation of the shaft will not beinterfered with by the bodily-reciprocatory movement of the mold-plateand parts connected therewith. The driving devices herein illustratedfor this purpose consist of a belt-pulley Mon one end of the shaft M anda driving-belt M which is trained over any suitable driving-pulley, andtwo idlers M which are located on the outer face of the frame-standard Aand are so arranged that the parts of the belt which lead from thepulley M to the idlers are'substantially perpendicular to the guidefacesa on the said frame, so that the movement of the said shaft will notappreciably increase or decrease the lengths of the parts of the beltbetween the pulley M and the said guide-pulleys. ,At the end of themold-plate remote from that to which the material is delivered by thespout R is located an exit-passage R, which is formed in the end wall orflange E of the receptacle and toward which the material de livered tothe receptacle is carried by the conveyer therein. Said exit-passage isshown as extended outside of the flange by a sheetmetal spout T, whichextends downwardly and rearwardly along the outer surface of the endflange E and is open at its rear or lower end for the escape of thematerial which passes therethrough from the receptacle. The purpose ofthe exit-passage R is to permit the escape from the receptacle ofmaterial delivered thereto in excess of that needed for filling themolds and which is carried past the molds by the conveyer, itbeingobvious that in the absence of a means of escape such surplus materialwould accumulate in the end of the receptacle toward which the conveyercarries it. To insure always a suitably-abundant supply of material tothe molds, the material will be fed to the receptacle at a rate somewhatfaster than required for filling the molds, the surplus material passingout through the passage R and being conveyed back'to the feedingdevices.

The mold-recesses are herein shown as provided with hard-metallining-sleeves e. Said sleeves are fitted accurately in apertures formedin the mold-plateto receive them and are made larger in exteriordiameter at their upper than at their lower parts and provided withdownwardly-facing shoulders, which engage corresponding shoulders formedin the apertures of the mold-plate. Provision is made for holding saidlining-sleeves accurately in place or from rising out of the saidrecesses in the backward movement of the plungers, consisting ofholding-bolts e arranged at an angle to the sleeves and havingrectangular heads at their upper ends, which are inclined or beveled ontheir front and nuts on their lower ends by which they are held inplace.

For giving reciprocatory motion to the moldplate E devices are providedas follows: J designates a transverse rock-shaft arranged parallel withthe crank-shaft D and journaled in suitable bearings in the sideframe-standards A near the lower ends of the latter, said shaft in theparticular instance shown extending through a passage or chamber formedin the rear orinner wall of the box A. ends of said shaftJ extend beyondthe outer faces of the frame-standards, and said shaft is provided atthe side of the machine adjacentto the gear-wheel O with anupwardly-extending rigid arm or lever J, which reaches to a pointopposite to the shaft B and is adapted for engagement at its ends with acam-groove 0, formed on the inner face of said gear- Wheel. The said armis shown as provided with a laterally-extending stud having a bearingwheel or roller j, adapted to travel in said cam-groove. J 'J designaterock-arms rigidly attached to said rock-shaft at the outer faces of theframe-standards and which extend outwardly or forwardly from the shaft,as clearly shown in Figs. 1, 2, '4, and 8. Said rock-arms are connectedwith the mold-plate The by means of connecting bars or links J pivotedto the forward or free ends of said rockarms and connected at theirupper ends with the ends of the mold-plate through the medium of studs jj, which are attached to or inserted in depending lugs J bolted to theunder side of the mold-plate near the ends thereof.

It follows from the construction above described in themold-plate-actuating devices that when the shaft J is rocked through themedium of .the arm J and the cam-groove C it will cause the mold-box,mold-plate, and connected parts to reciprocate toward and from the endsof the pistons I I, which close the outer ends of the mold-recesses. Theconfiguration of the cam-groove and the relative movement of the cam andcrank-shaft and the parts operated by the same are shown more clearly inFigs. 2 and 3. Said camgroove comprises a part concentric with the shaftB, which extends from 0 to c, an inwardly-deflected portion extendingfrom c to 0 and an outwardly-deflected portion extending from c to 0.

Referring now to the several positions assumed by the main parts abovereferred to in the operation of the machine, when the molds are open forthe admission of the material thereto the mold-plate will be at thelimit of its downward movement,with the pistons I I occupying the outerends of the mold recesses, and the plungers F B will be withdrawn fromthe mold-recesses and at or near the upper limit of their movement. Thiswill be the position of the parts at the beginning of thecompression-stroke of the plunger. As the eccentric-shaft and connectedcam-groove rotate the plungers, through the medium of the eccentric willbe moved downward through the mass of pulverulent material resting onthe mold-plate and force portions of the same into the mold-recesses,wherein the same will be compressed between the plungers and the pistonswhich then rest within the lower ends of the said mold-recesses. Duringthis time the roller on the actuatingarm J of the mold plate will bepassing through the concentric portion of the camgroove, and it isobvious that so long as said roller is engaged with said portion of thecamgroove no movement of the mold-plate will occur. Such concentricportion of the camgroove is made of such length that the roller j willbe engaged therewith during the entire forward movement of the plungers.In the several figures of the drawings the parts are shown in thepositions which they occupy at the end of the compression stroke of theplungers. From said drawings it will be seen that the bearing-roller ofthe actuatingarm J is at this time just about to'pass from theconcentric to the inwardly-deflected portion of the camgroove, so thatas the action of the eccentric begins to draw the plungers upwardly thecam-groove, through its action on the arm J, will begin to move themoldplate upwardly, so that the mold plate is moved upward with theplungers and for a short time at about the same rate of speed as theplungers. Further movement of the cam moves the mold-plate upwardly at arate faster than the movement of the plungers, so that by the time theroller reaches the end of the said inwardly-deflected portion of thecam-groove said plungers will have been separated from the ends of thepistons and also caused to project through the outer ends of themold-recesses. The plungers will by these movements of the parts operateto force the molded .blocks from and clear of said moldrecesses. Afterthe blocks have been ejected from the mold-recesses the bearing-rollerof the actuating-arm J will pass from the inwardly to the'outwardlydeflected portion of the cam-groove, and the mold-plates will then movedownwardly,while the plungers are being further retracted until theparts again reach the position for the delivery of the material to saidmold-recesses.

To provide means for positively limiting the downward movement ofthemold-box at the extreme forward limit of its throw, the lugs J areextended downwardly or made long enough to reach to the top surface ofthe guide-plate A so that they will bear against the same when themold-plate is at the downward limit of its movement or at the time ofgreatest compression. It will be obvious that if such means for limitingthe advance movement of the mold-box were omitted the frictionalengagement of the material in the mold-box with the walls thereof wouldtend to produce movement of the mold-box with the plungers, and therebyprod uce very heavy strains upon the actuating devices for themold-plate, including the lever-arm J and the cam operating the same.Such strains would manifestly cause the cam to produce unequal wear andlooseness in the operative parts. By the employment of the extension ofthe lugs J or othersuitably-arranged stop projections on the mold-plate,adapted to engage a fixed part of or upon the frame beneath the plate,the latter is held positively from advance movement during the forwardmotion or compressing stroke of the plungers, and bringing ofobjectional strains upon the mold-plate-actuating devices is therebyavoided. The lugs J are shown as provided at their lower ends withcushion-pieces j, of leather or rubber, which are adapted for contactwith the plate A and serve to prevent shock or jar when the said lugsstrike the said plate A in the descent of the mold-plate.

As hereinbefore stated, the pistons I I, which close the outer ends ofthe molds, are supported on the machine-frame by means of springs K K,so that said plungers are adapted to yield, in the direction of theirlength under the pressure of the plungers on the these are made asfollows: The hollow casting or box A has integral bottom, front, andrear walls, while the upper margin of its rear wall is extendedforwardly over the box to afford support for the transverse bearingplateA which latter is bolted to the forward edge of the said rear wall, asclearly seen in Figs. 3 and 8. A space or opening is left between theplate A and the front wall of the box A to afford access to the partswithin said box. Such opening will preferably be provided with a hingedtop or cover S to prevent access of dust or dirt to the parts withinsaidbox. The springs K K are arranged in pairs and in such manner thatone pair acts on each piston, one spring of each pair being located atthe rearand the other at the front of the center line of the box. One ofthe yokeplates L- L is arranged to bear upon the top of each pair ofsprings, said yoke-plates extending transversely of the box or fromfront to rear thereof. The springs K K are made of spiral form, and eachspring is made considerably larger in. diameter than the distancebetween the central axes of the pistons. The springs of the alternatepairs of springs are located at difierent distances from the centerlines of the box, and the yoke-plates L are longer than the yoke-platesL, the pairs of springs being arranged in such manner that the springs KK, which are engaged by the yoke-plates L, are arranged at some distanceapart and adjacent to the front and rear walls of the box, While thesprings K K, which are engaged by the yoke-plates L, are arrangedadjacent to each other and adjacent to the center line of the box, thisarrangement of the parts giving room for the several springs, as clearlyseen in the plan view in Fig. 9. To prevent interference of the longeryoke-plates L with the springs K K, which project at their sides beneaththe same, said yoke-plates L L are cut away at the central parts oftheir lower edges, as clearly seen in Figs. 3 and 4, so as to leavedownwardly-projecting ends adapted for enagement with the springs K Kand so that the central portions thereof will be above the level of theupper ends of the intermediate springs K K. The bottom wall of the box Ais provided with transverse ribs 0. a by which the springsare held inposition or preupward movement of the 'pistons' I and to prevent thesame being thrust upwardly through their bearings in the bearing-plate Asaid pistons are provided at their lower ends with heads 1', which arelocated between the plate A and the tops of the yoke-plates and formstop-shoulders on the pistons.

The purpose of providing separate yielding backing-springs for eachpiston, as described, is to enable the several briq'uets compressed atone time in the separate molds to be given the required degree ofpressure, so that the material in all the molds will be suitablycompressed, notwithstanding the fact that one mold may contain ,aslightly greater amount of material than others, it being obvious thatin the mold containing the greater amount of material the yieldingpiston closing its outer end will when pressure is brought thereon yielddownwardly and allow the material in the other molds to receivethe-proper amount of pressure, notwithstanding the fact that the severalplungers are rigidly connected with each other and with the eccentricwhich actuates the same. One important advantage gained by theemployment of springs arranged as described is that the necessary numberof springs may be employed without occupying too great a vertical spacein the bottom or lower part of the machine, it being obvious that bymaking the box which contains the springs of considerable width andproviding the yoke-plates L and L to operate in connection with saidsprings a plurality of springs may be arranged to operate on eachpiston. The drawings show two springs as applied to act on each piston;but manifestly a greater number may be employed and arranged in the samemanner as hereinbefore' set forth.

To provide means for increasing or decreas ing the tension of thesprings K K, one or more spacing plates or shims z" t are insertedbetween the lower end of each piston and its yoke-plate, the same beingherein shown as inserted in grooves or recesses formed in the upperfaces of said yoke-plates, as clearly seen in Figs. 3 and 4. By placinga greater or less number of said shims t" 71 between the lower ends ofsaid pistons and the yoke-plates or by using shims of greater or lessthickness the springs will be held compressed to a greater or lessdegree when the pistons are at the upward limit of their movement, sothat said springs will be held under greater or less tension and willpress upwardly with greater or less force against the pistons accordingto the number or thickness of the shims '12 i which may be used. Theadjustment of the tension of the springs K K in the manner describedobviously provides for giving a greater or less pressure upon the ment.

To provide means-for adjusting the length IIO ment.

of the pistons I, or, in other words, the distance from the forward orworking ends of the said pistons to the bearing-plate A in which thesaid pistons are held, I provide between the heads t' on the pistons andthe under surface of the bearing-plate A shims or plates i i, which maybe varied in number and thickness, so as to bring the several pistons inthe desired positions when the same are at the upward limit of, theirmove- Said shims i i may be made in any desired, manner; but, aspreferably constructed, the same consist of plates arranged to extendacross the machine, so as to operate in connection with all of thepistons. As shown in the drawings, Figs. 11, 12, 13, and 14:,the shim orplate i is provided with a series of holes for the passage of thepistons, and the plate 1' has a series of notches and prongs whichextend between the pistons, so that the said plate i may be easilyremoved by withdrawing it outwardly or laterally from its place betweenthe heads '5 and the bearing-plate 'A By the adjustment provided betweenthe heads dot the pistons and the bearing-plate A and between theyokeplates and the pistons two results are attained. If the pistons beadjusted in the bearingplate A by adding or removing one or more of theshims t t or inserting shims of greater or less thickness, thisadjustment of the pistons will result in a larger or smaller quantity ofmaterial being inserted in the moldrecesses by the action of theplungers and a correspondingly larger or smaller block or briquet beingproduced, and if it be desired to change the tension of the springs, soas to make the pressure on the material in the mold-recesses greater orless at the time of greatest compression, then one or more of the platesor shims 11 71 may be removed or inserted. It follows from the abovethat by the use of the construction described provision is made for anincrease or decrease of the size of the blocks or briquets formed bycompression in the mold-recesses and provision is also made for varyingthe tension of the springs to give greater or less pressure at the timeof maximum compression. Moreover, the adjusting devices provided forchanging the length of the pistons I aiford a means for compensation oradjustment in case of wear of the parts or in case it shall becomenecessary to refinish or resurface the ends of the pistons if the samebecome imperfect or rounded at their edges by wear.

To provide means for excluding dust from the eccentric, the pitman G,and the bearings between the pitman and cross-head, I provide aconstruction as follows: Said cross-head has the form of a troughshapedcasting, of which the front and rear margins are higher than the centralpart, at which the pivot-pin G is located, the trough-shaped form, asherein shown, being given to the cross-head by means of the end flangesf and the for- 'f f thereof.

wardly and real-wardly directed side flanges The front and rear marginsof said flanges f f are extended to bring them flush with the frontmargin of the upper part of the frame-upright A and with the rearsurfaces of the plates F Thefront margins of the frame-upright A intheir parts adjacent to the cross-head are, moreover, made parallel withthe cross-head guides, and a sheet-metal hood or covering N is extendedover and between the rounded upper ends of the frame-plates A, asclearly seen in Figs. 3 and 4. The lower front marginal part N of saidcover N is secured to the inclined front edges of the frame-barsadjacent to the forwardly-projecting flanges f of the crosshead, and thesaid lower marginal part N of the cover is flat and extends across themachine in front of and in contact with the front margin of the flangef,so as to form a flat bearing-surface, against which said flange movesor slides in the reciprocatory movement of the cross-head. A tightjointis thus formed between the cross-head and the cover N at the frontof the machine. At the rear of the cross-head said cover N is extendeddownwardly and inclined to correspond with the inclination of thecross-head guides and is provided with a flat part N which extendsacross the machine-frame and between the uprights A, so as to come incontact with the rear edge of the flange f said lower part N forming afiat bearing-surface for contact with the said rear edge of the flange fso that a tight joint is maintained between these parts at all timesduring the reciprocatory movement of the cross head. The trough-shapedform given to the cross-head by the end wallsf and inclined front andrear end flanges f f thereof affords a receptacle adapted to receive aliquid lubricant, by which the crank-pin G is constantly kept lubricatedduring the operation of the machine.

The ends of the eccentric-shaft B instead of engaging directly thebearing-apertures in the frame standards or uprights A are mounted inbearing-sleeves B which sleeves are made somewhat larger in diameterthan the eccentric B and are fitted and secured within cylindricapertures in the frame-plate made of proper size to receive them. Thisconstruction has the advantage of enabling the eccentric-shaft to bereadily removed from the frame, it being obvious that by first takingout the sleeves B the eccentric-shaft,with the eccentric, may then beremoved endwise through the aperture in one of said framestandards.

Provision is made for securing the plungers to the cross-head andadjusting the position of the plungers with respect to said cross-headas follows: Said cross-head is provided with a flat lower bearing-face,and secured to the same is a bar H, which extends lengthwise of thecross-head below the same and is provided with a plurality ofbearing-apertures h to receive the several plungers F. Said plungers aremade of cylindric form and preferably of the same diameter throughouttheir entire length, and the upper cylindric ends of the plungers enterthe bearing-apertures h and bear or abut at their'upper ends against thebottom surface of the cross-head. For securing the several plungers inthe bar H devices are provided, as shown more clearly in Figs. 15 and16, asfollows: Between each pair of adjacent plungers is formed in thebar H a transverse aperture h, which is smaller at one side of the barthan at the other, said recesses or apertures opening at either sidethereof into the apertures h for the plungers. I11 said apertures areplaced clam ping-wedges H, to the smaller ends of which are connectedstems k which extend through the smaller ends of the recesses. To theouter ends of said stems are applied nuts 7L3. The oppositely beveled orinclined side faces of the wedges H are adapted to bear against theinner or adjacent faces of the two .plungers between which the wedgesare placed, so that when the said wedges are drawn outwardly by the nutsk the plungers will be firmly clamped of the mold-plate.

in the bar H. To provide means for adjusting the plungers endwise withrespect to the cross-head, the bar H is provided in its upper surfacewith a longitudinal groove H Figs. 3, 4, and 16, and in said groovebetween the upper ends of the plungers and the lower face of thecross-head are placed plates or shims The longitudinal groove or recessH opens through the ends of the bar H, so that said plates maybe removedand inserted when desired, and said recess is made of such depth as toreceiveany number of shims or plates or plates of any thickness that maybe re quired in adjusting the plungers. The bar H shown in the drawingsis bolted to the cross-head and is arranged to project downwardly pastthe upper edge of the flange E To prevent interference of the saidcasting with the material in the mold-plates, the front surface thereofis beveled or inclined rearwardly and downwardly, as clearly shown inFig. 3. Moreover, to pre vent the entrance of material between the saidbar H and the flange E, said bar is provided witha flexible striphflwhich is attached to its rear, or inner face and bears at its freelower edge rearwardly against the outer face of said plate E. Endwiseadjustment of the plungers with respect to the cross-head may berequired to compensate for wear in the parts of the machine, and suchadjustmentalso enables the degree of compression ap plied to thematerial in the mold to be increased or diminished without disturbingthe pistons I I.

In addition to the means provided for ad justment of the pistons andplungers provision is also made for adjusting the mold-plate, so thatthe position of the said mold-plate with relation to the pistons andplungers may be varied without the necessity of changing theadjustment'of the latter. As shown in the principal figures of thedrawings, Figs. 1

to 4, such adjustment of the mold-plate is afforded through adjustingmeans interposed between the lugs J J and the mold-plate, adapted toenable the said mold-plate to be raised or lowered with respect. to the.said lugs, the latter in the construction shown affording the connectingmeans between the mold-plate and the studs jj, to which are pivoted thelinks J J of the mold-plate-opcrating devices. The adjustingmeansillustrated consists of plates or shims J J, interposed between thetop surfaces of the lugs and the bottom surface of the-mold-plate. By

introducing shims of different thickness or by employing a greater orless number of the same the mold-plate may be adjusted up or down to adesired extent. The mold-plateactuating devices may, however, beprovided with adjusting means for the mold-plate located elsewhere thanas shown in said Figs. 1 to 4 and at'any desired point between theactuating-shaft from which the mold-plate is driven and the mold-plateitself. Adj ustment of the mold-plate may, for instance, be provided forthrough lateral adjustment of the rollerj on the arm J, the efiect ofsuch adjustment of the roller on the arm being obviously the same asthat produced by the use of the shims J of varying thickness between thelugs J J and the mold-plate. In Figs. 17 and '18 are shown means foradjusting said roller on the arm, as follows: The arm J is provided witha transverse slotj having parallel sides, and the roller j is mounted ona bearing-study, which extends through said slot and is providedwithopposite fiat parallel faces, which have sliding engagement with theopposite sides of the slot. The stud 9' is provided with a wide flange7' which bears against the flat face of the arm J at the side thereofadjacent to the roller, and a wide Washerj is secured by a screwj to theend of the stud and bears against the opposite flat side of the arm,said flange and washer serving to hold the stud rigidly at right anglesto the arm. For moving or shifting the stud on the slot and holding itin its adjusted position set-screws j j are inserted through the arms atopposite ends of the slot and are adapted to bear endwise on the stud.

Adjustment of the mold-plate by the use of the devices last abovedescribed or through the placing of thicker or thinner spacingplatesbetween the lugs J J and the mold- 'plate has the effect of changing theposition of the top surface of the mold-plate with respect to theworking ends of the pistons and plungers, with the result that a greateror less quantity of material will be contained in the mold-recesses atthe time the ends of the plungers reach and enter the same in theirdescent, and the degree of compression to which the briquets aresubjected will be correspondingly varied. Manifestly if the effect ofthe adjustment is to lift the mold-plate its top surface will be raisedto a greater distance above theworking ends of the pistons and the moldswill be deeper and contain a larger quantity of material at the time theplungers enter the mold-recesses and compression begins.Similarly,iftheefiectoftheadjustment is to lower the mold-plate theworking ends of the pistons will be nearer the top of the plate and themold-recesses will be shallower and contain less material at thebeginning of the compressive action of the plungers.

While the same general result that is attained by the adjustment of themold-plate may be obtained by the adjustment of both the pistons andplungers vertically in one direction or the other, yet the provision forseparately adjusting the mold-plate is of considerable practicalimportance, because enabling the mold-plate to be so adjusted as toreceive a desired quantity of material without affecting the adjustmentof the pistons and plungers after the same have been properly adjustedin view of other requirementsas, for instance, supposing the pistons andplungers to have been adj usted' to give a desired degree of compressionin acting on a briquet of a certain thickness, then the mold-plate maybe separately adjusted to so change the capacity of the mold-recesses atthe timeof.

delivery of the material thereto that the mold-recesses will receive thequantity of material required for producing a briquet of the thicknesscalled for.

To provide means for removing from the ends of the plungers thebri-quets formed by compression in the molds, and which are in somecases liable to stick to the said ends of the plungers after they havebeen forced out of the mold-recesses, a knocking-off device is provided,as follows: 0, Figs. 3, 4, and 7, is a laterally-sliding plate mountedon the lower surface of the mold-plate E, so as to slide backwardly andforwardly thereon. Said plate 0 is herein shown as held or guided at itsends in grooved supporting-plates O', which are bolted to the lower faceof the mold-plate -near the ends of the frame.

strike the briquets to dislodge them from the ends of the plungers. Inthe particular construction shown and illustrated in Fig. 7 the plate 0is extended to form projections or prongs between the mold-recesses andhas between said prongs semicircular notches. Provision is made forgiving backward and forward movement to the said plates 0, as follows: Arock-shaft O is mounted horizon tally in lugs o 0 on the casting E andextends across the front of the same. Said rock-shaft is provided withdepending arms 0 connected by rods 0' with said plate 0 near the ends ofthe same, said rods 0 being pivotally connected with the said arms andwith-the edge of the plate. The plate 0 is held normally at the outwardlimit of its movement and out of the path of the plungers by means ofsprings O 0 which in the instance shown are located between the arms 0and lugs 0 on the casting E and act by expansion on the arms 0 in amanner to throw the same outwardly. For actuating the rock-shaft O in amanner to move the plate 0 against the action of the springs O 0 saidrock-shaft is provided at one end with a rigid outwardly extendingcrank-arm O to which is pivoted an operating-rod 0 which extendsdownwardly toward the base of the machine and at its lower end isengaged with a guide-aperture in a bracket 0 which is herein shown ascast upon and as projecting outwardly from the front Wall of the box A.On the rod 0 below the bracket 0 is a stop or collar, formed in theinstance shown by means of a nut 0 and ajam-nuto applied to thescrew-threaded lower part of the rod. The rock-shaft o partakes of thereciprocatory motion of the mold-plate, and the not 0 on the rod 0 isarranged in such'position that in the upward movement of the mold-platethe nut will strike the bracket 0 and by arresting the movement of theactuating-rod O draw downwardly the free end of the crank-arm O and thusrock or turn the shaft 0 so as to carry the connecting-rods 0 inwardly,and thus move the plate 0 into the path'of the plungers. This will occureach time the moldplate rises and the plu ngers are carried through themold-recesses to eject the finished briquets therefrom.

Provision is made for delivering or carrying away the finished briquetsfrom the machine, as follows: P indicates as a whole a travelingbelt-carrier, consisting of a plurality of separate ropes or strands pp.Said carrier extends across the machine at the rear of and somewhatbelow the mold-plate. The ropes or strands of the carrier are trainedover a pulley P, which is mounted on the forward end of a horizontalshaft P and is provided with a plurality of grooves to receive thestrands or ropes p 10. Said ropes pp lead horizontally from the pulley Pand across the machine past the frame-plate A opposite the side of themachine at which the pulley P is located, the ropes being trained overanother grooved pulley located at the point at which it is desired todeliver the finished briquets as they come from the machine. The pulleyP and the corresponding pulley over which the ropes p p are trained areso located as to bring the upper laps of said ropes adjacent to andsomewhat below the level of the mold-plate, or, in other words, so as tobring said upper lap of the carrier in position to receive the finishedbriquets as they are ejected from the mold-recesses through the actionof the plungers. To insure the holding of the finished briquets upon thetraveling carrier,the ropes or strands 4 thereof areplaced so closetogether as to prevent the finished briquet from falling therethrough orbetween the same. The beltpulley P is also made of concave form, orlarger at its ends than at its middle part, so as to give a trough shapeto the conveying or supporting surface of the carrier formed by theupper laps of the several ropesp p. Inasmuch as the outermost rope p onthe larger part of the pulley P travels faster than the intermediateropes the briquets resting upon the traveling carrier will tend toremainat the center or upon the slovwmoving portion of the carrier. Theshaft P is shown as mounted in bearings P P, attached to the inner faceof onset the frame-standards A. To provide for driving or actuating theshaft P, a driving connection is provided between the same and thecounter-shaft D of the machine, which in the particular instance shownembraces a vertical or upright shaft Q, which is mounted in abearing-sleeve q, connected with one of the frame-standards by a bracketq. The shaft Q is arranged in the same vertical plane as the shaft P andsaid shafts are provided with intermeshing gear-pinions 10 and g locatedat the rear of the framestandard upon which the shaft Qis supported. Atits upper end the shaft Q is arranged adjacent to the inner end of thecounter-shaft D, and on the upper end of the shaft Q and adjacent end ofthe shaft D are located intermeshing beveled gears d and g Fig. 5.

Instead of employing the device described for affording drivingconnection between the counter-shaft and the shaft P said shaft'P? maybe driven by means of any other suitable driving connections. 1 At thebase of the machine and extending transversely thereof is an open-toppedtrough T, (shown in Figs. 2 and 3,) within which is located a conveyerT, which latter is preferably located below the level of the framestandards, so that the material in thetrough may be carried by theconveyor beneath one of the said standards; The trough T is arranged inposition to receive all material falling from or through the carrierP-and also that which may pass from the receptacle over the mold-platethrough the exit-passage R and spout r. The conveyer T will bearrangedto deliver all material which falls into the trough to a receptacle,from which the same may be returned to the spout R and again deliveredto the machine. In the particular construction illustrated the carrierPis located over the rear part of the box A, so that the fragments ofbroken or imperfect briquets which fall between the strands of thecarrier will descend upon the rearwardlyinclined top surface of saidbox, the trough T being in this instance located beneath the rear marginof the said box and in position to receive all material which may fallupon and slide rearwardly from the same.

I claim as my invention- 1. A molding-machine comprising a reciperocating plunger, and an inclined niold-plate provided with amold-recess located near its lower edge; said mold-plate being providedwith an inclined flange which rises from its lower edge below the openupper end of the mold-recess and forms with the inclined top' surface ofthe mold-plate a receptacle for the material to be molded through whichthe plunger passes and which is adapted for the gravitation of thematerial therein deposited toward the mold-recess. A.

2. A molding-machine comprising an inclined reciprocating plunger, andan inclined mold-plate provided with a mold-recess and vided with aninclined flange which rises from its lower edge. below the open upperends of the mold-recesses and a flange which rises reciprocatingplungers, and an inclined moldplate provided with a mold-recess locatednear its lower edge; said mold-plate being provided with a flange whichrises from its lower edge below the open upper end of the mold-recessand is inclined to correspond with the inclination of the plungers, saidflange forming with the inclined top surface of the mold-plate areceptacle for the material to be molded, through which the plungerpasses and which is adapted for the gravitation of the material thereindeposited toward the mold-recesses.

5. A molding-machine comprising a machineframe, inclined reciprocatingplungers, an inclined mold-plate which reciprocates in an inclined path,and which is provided with mold-recesses and with an inclined flangewhich rises from its lower edge and IIO forms with the mold-plate areceptacle for the material to be molded, and inclined pistons forclosing the lower ends of the moldrecesses, said pistons beingyieldingly mount- ,ed in the machine-frame.

cess near its lower edge, and with an inclined flange which rises fromits lower edge and forms, with the mold-plate, a receptacle for thematerial to be molded, said mold-plate being adapted to reciprocate in apath which is inclined to correspond with the inclination of theplunger, and an inclined piston for closing the outer end of saidmold-recess, located in alinement with the plunger and moldrecess, andwhich is adapted to yield endwise.

7. A molding-machine comprising a machine-frame provided with twoframe-siandards, inclined reciprocating plungers, a crosshead whichmoves in an inclined path at the upper part of said frame-standards andwhich carries said plungers, a mold-plate provided with a mold-recesslocated near its lower edge and having an inclined flange which risesfrom its lower edge and forms with the moldplate, a receptacle for thematerial to be molded; said machine-frame standards being provided withinclined guides on which the said mold-plate slides, and a piston forclosing the outer end of the said mold-recess, said I piston beingmovably and yieldinglysupported on the machine-frame.

8. A molding-machine comprising a machine-frame, a mold-plate providedwith a plurality of mold-recesses, a plurality of reciprocatingplunger-s arranged to enter said mold-recesses, pistons for closing theouter ends of said mold-recesses, a guide-plate on the machine-frame inwhich the said pistons are adapted to slide endwise, said pistons havingstop-shoulders to limit their movement in said guide-plate toward themoldplate, a spring for each piston located between the end of saidpiston and an opposing bearing-surfaceon theframe,adjusting meanslocated between the stop-shoulders and the guideplate for controllingthe position of the Working ends of the pistons with respect to themold-plate and plungers, and adjusting means located between the springsand the pistons for adjusting the tension of the springs.

9. A molding-machine comprising a reciprocating mold-plate provided witha mold-recess, a reciprocating plunger adapted to enter said recess, apiston for closing the outer end of said mold-recess, said piston beingmounted to slide endwise in the machineframe and having a stop-shoulderby which its movement toward the mold-plate is limited, a plurality ofbacking-springs for the piston which rest upon a bearing-surface on themachine-frame,'and a yoke-plate interposed between said springs and thepistons, said yoke-plate being made separate from and adapted to bearagainst the end of the piston.

10. A'molding-machine comprising a ma chine-frame, a reciprocatingmold-plate provided with a mold-recess, a piston for closing the outerend of said mold-recess, said piston being mountedto slide endwise onthe machine-frame and being provided with a stopshoulder to limit itsmovement toward the mold-plate, a plurality of spiral springs interposedbetween a part of the frame and said piston, a yoke-plate interposedbetween said springs and the end of the piston, and means locatedbetween the yoke-plate and the piston for adjusting the tension of saidsprings.

11. A molding-machine comprising a reciprocating plunger, areciprocating mold-plate provided with a mold-recess, a piston forclosing the outer ends of said mold-recess, said piston being mounted toslide end wise on the machine-frame and having a stop-shoulder by whichits movement toward the mold-plate is limited, a plurality of springsinterposed between a part of the frame and the end of said piston, ayoke-plate interposed between the said springs and the end of thepiston, and a shim or shims interposed between the end of the piston andsaid yoke-plate, whereby the tension of said springs at the time ofcompression may be varied.

12. A molding-machine comprising a plurality of reciprocating plungers,a reciprocating mold-plate provided with a plurality of mold-recesses,pistons for closing the outer ends of said mold-recesses, said pistonsbeing mounted to slide endwise on the machineframe and being providedwith stop-shoulders to limit their movement toward the moldplate, aplurality of springs applied between a part of the machine-frame and theend of each of said pistons, yoke-plates interposed between said springsand said piston and shims interposed between said yoke-plates and theends of the piston for separately adjusting the tension of the springs.

13. A molding-machine comprisinga reciprocating plunger, a reciprocatingmold-plate provided with a mold-recess, a piston for closing the outerend of said mold-recess, said piston being mounted to slide endwise onthe machine-frame and being provided with a stop-shoulder to limit itsmovement toward the mold-plate, a backing-spring interposed between saidpiston and the machine-frame, a shim or shims applied between saidstopshoulder and a part of the machine-frame for limiting the advancemovement of the piston under the action of said springs, and a shim orshims interposed between said yoke-plate and the piston for adjustingthe tension of the spring. .n

14. A molding-machinecomprising a machine-frame having twoframe-standards, a plurality of reciprocating plungers, a reciprocatingmold-plate provided with a plurality of mold-recesses, pistons forclosing the moldrecesses, a stationary guide-plate provided withguide-apertures for said pistons, a plurality of backing-springs foreach piston, said springs being of coiled form and arranged side by sideon a supporting-surface on the machine-frame, a plurality of yoke-platesinterposed between the springs and the ends of the pistons which projectbeyond the guideplate, said yoke-plates being parallel with each otherand each of the same being adapted to bear on a plurality of saidsprings, said springs being larger in diameter than the dis tancebetween the centers of the pistons and the springs which act on adjacentyoke-plates being located out of lateral alinement with each other andarranged in overlapping re-. lation.

15. A molding-machine comprising a frame having frame standards oruprights, a crosshead mounted to slide on the upper parts of saidstandards, plungers attached to said cross-head, a. reciprocating moldplate cated below the cross-head and also mounted to slide on saidframe-standards, said moldplate being provided with a plurality ofmoldrecesses, a plurality of pistons for closing the mold-recesses, aguide-plate for said pistons, a plurality of backing-springs for eachpiston, yoke-plates interposed between the ends of the pistons and saidsprings, and a box for said springs located between the lower ends ofthe frame-standards, one wall of said box being extended over the sameto form a support for the said guide-plate; said springs being arrangedside by side in contact with the bottom wall of the box, and the saidyokeplates being arranged parallel with each other between the end wallsof said box.

16, A molding-machine comprising a moldplate provided with a pluralityof mold-recesses, arranged in a line or row, plungers adapted to enterthe mold-recesses, said moldplate being provided with walls or flangeswhich form therewith a receptacle for confining the material to bemolded adjacent to the mold-recesses, and a conveyer 'in said receptacleextending along the row of mold-recesses to distribute to the severalmold-recesses the material fed to said receptacle.

17. A molding-machine comprising a moldplate provided with a pluralityof mold-recesses arranged in a line or row, plungers adapted to entersaid mold-recesses,said moldplate being provided with walls or flangeswhich form therewith a receptacle which confines the material to bemolded adjacent to the mold-recesses,a spirally-bladed conveyorshaftlocated in said receptacle at one side of the row of mold-recesses andmeans for giving rotative movement to. said conveyer.

18. A molding-machine comprising a plurality of inclined reciprocatingplungers arranged in a straight line or row, an inclined mold-plateprovided with mold-recesses, said mold-plate being provided with wallsor flanges which form therewith a receptacle for the material to bemolded, and a rotative, spirally-bladed conveyer-shaft arrangedlongitudinally in said receptacle and extending at one side of the pathsof the said plungers and of the mold-recesses.

19. The combination with a reciprocating mold-plate provided withflanges which formwith the mold-plate a receptacle for the material tobe molded, a rotative conveyer which is mounted in and moves with saidreceptacle, adriving-belt for the conveyor, and idlers for the beltwhich are mounted on stationary bearings and are so located that theparts of the belt between the idlers and the conveyer extendsubstantially at right angles to the direction of the movement of themolds.

20. The combination with a mold-plate provided with a mold-recess, of alining-sleeve for the mold-recess which is larger at one face of themold-plate than at the other, and a holding-bolt arranged at an angle tothe axis of the lining-sleeve; said bolt having a tapered head whichengages the end surface of the larger end of said sleeve to hold thesame in place in the mold-plate.

21. The combination with a mold-plate provid ed with mold-recesses, ofplungers adapted to enter said mold-recesses, said mold-plate beingprovided with walls or flanges which form therewith a receptacle forconfining the material to be molded adjacent to said recesses and withan exit-passage, and a conveyer in the receptacle acting toconvey thematerial therein to the several mold-recesses and toward saidexit-passage.

22. The combination with a machine-frame, of a reciprocating mold-plateand plungers, a knock-off plate movably mounted on the moldplate, arock-shaft mounted on and moving with said mold-plate, operativeconnection between the said rock-shaft and the said knock-01f plate,springs applied to hold the knock-0d plate out of the path of theplungers, a crank-arm attached to said rock-shaft and an actuating-rodconnected with said crank-arm, said rod being provided with a stopadapted for contact with a part on the machine-frame so as to turn therock-shaft at each reciprocation of the mold-plate.

23. The combination with a frame provided with frame-standards, ofreciprocating plungers, across-head which slides on the framestandardsand to which said plungers are attached, an actuating-shaft mountedinthe frame-standards above the cross-head, a pitman connecting theactuating-shaft with the cross-head, and a cover attached to theframe-standards and surrounding the crankshaft and pitman, said coverbeing provided with parallel, fiat, inner bearing-surfaces and thecross-head being provided with lateral flanges which extend outwardly toand have sliding engagement withv the said parallel bearing-surfaces ofsaid cover.

24:. The combination with plungers, of a cross-head provided withapertures adapted to receive the ends of the plungers and havingtransverse passages located between the adjacent plungers, Wedgesinserted through said passages and bearing on adjacent plungers, andmeans for forcing and holding said wedges against said plungers.

25. The combination with a mold-plate provided with a mold-recess andplungers of an endless traveling carrier embracing a plurality ofseparated strands, a receiving-trough front walls which extend betweenand are castintegral with the lower ends of said framestandards; therear wall of said boX being extended at its upper edge forwardly overthe box to form a support for said guide-plate.

27. The combination with an inclined reciprocating plunger, of across-head to which the same is attached, an inclined reciprocatingmold-plate provided with a mold-recess and with a flange which risesfrom its lower margin and is parallel with the plunger, said cross-headbeing provided with an extension which overlaps the flange of themold-plate and with a flexible strip which bears against the said flangeto prevent the escape of material between the said parts.

28. The combination with a plurality of plungers, of a cross-head andmeans for securing the plungers to the cross-head comprising a barsecured to the cross-head and provided with a plurality of apertures toreceive the ends of the plungers and with a longitudinal groove in itssurface which is in contact with the cross-head and between its sidemargins which bear against the crosshead; said groove forming a passagebetween the bar'and the cross-head into which said apertures open attheirinner ends, clamping means for holding the plungers in saidapertures, and a shim or shims adapted for insertion endwise into saidpassage between the ends of the plungers and the surface of thecross-head.

29. The combination with a reciprocating plunger, of a reciprocatingmold-plate provided with a mold-recess, a piston for closing themold-recess, a shaft from which the plumger and mold-plate are actuated,and connections between the said shaft and the moldplate embracing a camon the shaft, a rockshaft, an arm on the rock-shaft engaging said camand crank-arms on the rock-shaft connected with the mold-plate, saidconnections embracing adjusting means by which the position of themold-plate with respect to the piston and plunger may be changed oradjusted.

30. A molding-machine comprising a machine-frame, a reciprocatingplunger, a reciprocating mold-plate, and lugs attached to the mold-platelocated'in position for contact with a stationary part of themachine-frame when the mold-plate is at the limit of its movement awayfrom the plungers, and spacing-plates or shims interposed between saidlugs and the mold-plate.

31. Amolding-machine comprising a machine-frame, a reciprocatingplunger, a moldplate, means for giving reciprocating motion to themold-plate, and lugs attached to the mold-plate and adapted for contactwith a stationary part of the machine-frame when the mold-plate is atthe limit of its movement away from the plungers, said lugs formingparts of the connections between the moldplate-actuating devices and themold-plate, and spacing plates or shims interposed between said lugs andthe mold-plate.

32. A molding-machine comprising a machine-frame, a reciprocatingplunger, a moldplate, a rock-shaft provided with rock-arms, lugsattached to the mold-plate and provided with pivot-studs, linksconnecting the said rock-arms with the pivot-studs, means for givingmotion to said rock-shaft, and shims or spacing-plates interposedbetween the said lugs and the mold-plate.

In testimony that I claim the foregoing as my invention I aflixmysignature in presence of two witnesses.

BRUCE CLARK WHITE.

Witnesses:

C. CLARENCE Poona, WILLIAM L. HALL.

